The Week In Numbers: The Alcohol Content Of Rocket Fuel, Ripples From The Big Bang, And More
Laser antenna Robert Forward's proposed free-space laser antenna to detect gravity waves from the Crab Nebula. Central satellite of three has laser and beam splitter. Two outer spacecraft have reflectors. Bill Bourne/ Popular Science archives 1979: the year physicist Alan Guth came up with the theory of cosmic inflation, the dramatic expansion that created our universe (this week, scientists found the first direct evidence of Guth's theory) 681 billion pixels: the size of this new interactive map of the moon's north pole Close-Up of a Crater on NASA's Lunar Map NASA/GSFC/Arizona State University 120,000 celestial objects: the astronomical database of this Wi-Fi-connected telescope that finds stars for you Celestron Cosmos 90 GT Wi-Fi Telescope ...